公开(公告)号：US20190295561A1

公开(公告)日：2019-09-26

申请号：US16439541

申请日：2019-06-12

申请人： Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V.

发明人： Sascha Disch ,  Ralf Geiger ,  Andreas Niedermeier ,  Matthias Neusinger ,  Konstantin Schmidt ,  Stephan Wilde ,  Benjamin Schubert ,  Christian Neukam

IPC分类号： G10L19/028 ,  G10L21/038 ,  G10L25/21 ,  G10L19/02

摘要： An apparatus for generating an enhanced signal from an input signal, wherein the enhanced signal has spectral values for an enhancement spectral region, the spectral values for the enhancement spectral regions not being contained in the input signal, includes a mapper for mapping a source spectral region of the input signal to a target region in the enhancement spectral region, the source spectral region including a noise-filling region; and a noise filler configured for generating first noise values for the noise-filling region in the source spectral region of the input signal and for generating second noise values for a noise region in the target region, wherein the second noise values are decorrelated from the first noise values or for generating second noise values for a noise region in the target region, wherein the second noise values are decorrelated from first noise values in the source region.

公开(公告)号：US10236007B2

公开(公告)日：2019-03-19

申请号：US15414289

申请日：2017-01-24

申请人： Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V.

发明人： Sascha Disch ,  Martin Dietz ,  Markus Multrus ,  Guillaume Fuchs ,  Emmanuel Ravelli ,  Matthias Neusinger ,  Markus Schnell ,  Benjamin Schubert ,  Bernhard Grill

IPC分类号： G10L19/02 ,  G10L19/24 ,  G10L19/22 ,  G10L19/18 ,  G10L19/022 ,  G10L19/028 ,  G10L19/04 ,  G10L21/038 ,  G10L19/083 ,  G10L19/26 ,  G10L19/00

摘要： An audio encoder for encoding an audio signal, includes: a first encoding processor for encoding a first audio signal portion in a frequency domain, wherein the first encoding processor includes: a time frequency converter for converting the first audio signal portion into a frequency domain representation having spectral lines up to a maximum frequency of the first audio signal portion; a spectral encoder for encoding the frequency domain representation; a second encoding processor for encoding a second different audio signal portion in the time domain; a cross-processor for calculating, from the encoded spectral representation of the first audio signal portion, initialization data of the second encoding processor, so that the second encoding processing is initialized to encode the second audio signal portion immediately following the first audio signal portion in time in the audio signal.